EP1713098A4 - Radial anisotropic cylindrical sintered magnet and permanent magnet motor - Google Patents

Radial anisotropic cylindrical sintered magnet and permanent magnet motor

Info

Publication number
EP1713098A4
EP1713098A4 EP05751118A EP05751118A EP1713098A4 EP 1713098 A4 EP1713098 A4 EP 1713098A4 EP 05751118 A EP05751118 A EP 05751118A EP 05751118 A EP05751118 A EP 05751118A EP 1713098 A4 EP1713098 A4 EP 1713098A4
Authority
EP
European Patent Office
Prior art keywords
cylindrical sintered
radial anisotropic
permanent magnet
anisotropic cylindrical
sintered magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05751118A
Other languages
German (de)
French (fr)
Other versions
EP1713098B1 (en
EP1713098A1 (en
Inventor
Koji Sato
Takehisa Minowa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Publication of EP1713098A1 publication Critical patent/EP1713098A1/en
Publication of EP1713098A4 publication Critical patent/EP1713098A4/en
Application granted granted Critical
Publication of EP1713098B1 publication Critical patent/EP1713098B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0268—Magnetic cylinders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • H01F41/028—Radial anisotropy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
EP05751118.0A 2004-06-22 2005-06-20 Radial anisotropic cylindrical sintered magnet and permanent magnet motor Active EP1713098B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004183214 2004-06-22
PCT/JP2005/011242 WO2005124796A1 (en) 2004-06-22 2005-06-20 Radial anisotropic cylindrical sintered magnet and permanent magnet motor

Publications (3)

Publication Number Publication Date
EP1713098A1 EP1713098A1 (en) 2006-10-18
EP1713098A4 true EP1713098A4 (en) 2007-12-05
EP1713098B1 EP1713098B1 (en) 2015-12-23

Family

ID=35509971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05751118.0A Active EP1713098B1 (en) 2004-06-22 2005-06-20 Radial anisotropic cylindrical sintered magnet and permanent magnet motor

Country Status (7)

Country Link
US (1) US7626300B2 (en)
EP (1) EP1713098B1 (en)
JP (1) JP5089979B2 (en)
CN (1) CN1934662B (en)
MY (1) MY142973A (en)
TW (1) TWI398882B (en)
WO (1) WO2005124796A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI298892B (en) * 2002-08-29 2008-07-11 Shinetsu Chemical Co Radial anisotropic ring magnet and method of manufacturing the ring magnet
KR101108559B1 (en) * 2005-12-13 2012-01-30 신에쓰 가가꾸 고교 가부시끼가이샤 Method for preparing radially anisotropic magnet
US20080172861A1 (en) * 2007-01-23 2008-07-24 Holmes Alan G Methods for manufacturing motor core parts with magnetic orientation
US20110012463A1 (en) * 2007-08-01 2011-01-20 Gerald David Duncan appliance, rotor and magnet element
CN101256898B (en) * 2008-03-27 2011-06-29 成问好 Method and apparatus for forming of radiation orientating round ring-shaped magnetic body
WO2012132357A1 (en) * 2011-03-30 2012-10-04 パナソニック株式会社 Bonded-magnet rotor, method of manufacturing thereof, and motor provided therewith
US9698660B2 (en) * 2013-10-25 2017-07-04 General Electric Company System and method for heating ferrite magnet motors for low temperatures
US9602043B2 (en) 2014-08-29 2017-03-21 General Electric Company Magnet management in electric machines
DE102016211251A1 (en) * 2016-06-23 2017-12-28 Robert Bosch Gmbh Rotor for an electric machine, electric machine with the rotor and manufacturing process for the rotor
US10084410B2 (en) * 2016-12-15 2018-09-25 Bose Corporation Moving magnet motor and transducer with moving magnet motor
JP6914150B2 (en) * 2017-09-07 2021-08-04 株式会社ミツバ Brushless motor
CN117837058A (en) 2021-08-26 2024-04-05 Tdk株式会社 Rotor and motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020047431A1 (en) * 2000-04-27 2002-04-25 Tetsuharu Fukushima AC servomotor
EP1308970A2 (en) * 2001-10-31 2003-05-07 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004167A (en) * 1975-01-29 1977-01-18 Magna Motors Corporation Permanent magnet stators
JPH06260328A (en) * 1992-04-28 1994-09-16 Sumitomo Special Metals Co Ltd Cylindrical anisotropic magnet and manufacture thereof
JP3182979B2 (en) * 1993-05-24 2001-07-03 セイコーエプソン株式会社 Anisotropic magnet, manufacturing method and manufacturing apparatus
JP3690616B2 (en) * 1996-04-15 2005-08-31 日立金属株式会社 Rotating machine
JPH11204318A (en) 1998-01-19 1999-07-30 Tokin Corp Manufacture of fe-cr-co hard magnetic material
JP2000116090A (en) 1998-09-30 2000-04-21 Shin Etsu Chem Co Ltd Permanent magnet motor
EP0996216B1 (en) 1998-09-30 2004-02-18 Shin-Etsu Chemical Co., Ltd. Permanent magnet motor and rotor thereof
JP2002354721A (en) 2001-05-29 2002-12-06 Hitachi Ltd Rotating electric machine comprising permanent magnet rotor
JP4238971B2 (en) * 2001-10-31 2009-03-18 信越化学工業株式会社 Manufacturing method of radial anisotropic sintered magnet
JP4133686B2 (en) * 2002-08-29 2008-08-13 信越化学工業株式会社 Radial anisotropic ring magnet and manufacturing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020047431A1 (en) * 2000-04-27 2002-04-25 Tetsuharu Fukushima AC servomotor
EP1308970A2 (en) * 2001-10-31 2003-05-07 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005124796A1 *

Also Published As

Publication number Publication date
TW200615981A (en) 2006-05-16
JPWO2005124796A1 (en) 2008-04-17
TWI398882B (en) 2013-06-11
WO2005124796A1 (en) 2005-12-29
EP1713098B1 (en) 2015-12-23
US7626300B2 (en) 2009-12-01
EP1713098A1 (en) 2006-10-18
US20070170801A1 (en) 2007-07-26
JP5089979B2 (en) 2012-12-05
MY142973A (en) 2011-01-31
CN1934662B (en) 2010-10-06
CN1934662A (en) 2007-03-21

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